166898566 has 16 divisors (see below), whose sum is σ = 256568400. Its totient is φ = 81381888.

The previous prime is 166898539. The next prime is 166898569. The reversal of 166898566 is 665898661.

It is a happy number.

166898566 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166898569) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78850 + ... + 80938.

It is an arithmetic number, because the mean of its divisors is an integer number (16035525).

Almost surely, 2^166898566 is an apocalyptic number.

166898566 is a deficient number, since it is larger than the sum of its proper divisors (89669834).

166898566 is a wasteful number, since it uses less digits than its factorization.

166898566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3063.

The product of its digits is 3732480, while the sum is 55.

The square root of 166898566 is about 12918.9227879108. The cubic root of 166898566 is about 550.5763281039.

The spelling of 166898566 in words is "one hundred sixty-six million, eight hundred ninety-eight thousand, five hundred sixty-six".